Update tests; run fuzzing (#294)

Run fuzzing tests in CI.

Use race detector when running tests.

Add missing `t.Helper()` calls.

Update test helpers in `pkg/bindfilter` to use `RtlGetNtVersionNumbers`
instead of reading registry, and skip tests if not running as admin.

Signed-off-by: Hamza El-Saawy <hamzaelsaawy@microsoft.com>

.golangci.yml

@@ -20,6 +20,7 @@ linters:
     - gofmt # files are gofmt'ed
     - gosec # security
     - nilerr # returns nil even with non-nil error
+    - thelper #  test helpers without t.Helper()
     - unparam # unused function params
 
 issues: